/**************************************************************************************
*  DAC.c
*
*  This file defines all native methods that have to be implemented to support
*  the class lpc2xxx/hw/ADC
*
*  Application developer should use the following functions to get access to
*  arrays and String object:
*       vmGetStringCount
*       vmGetStringArray
*       vmGetArraySize
*       vmGetArray
*  These functions are accessible via vm_config_t structure.
*
*  Native methods implementation
*  -----------------------------
*  Note that if the native method is NOT declared as static then param[0]
*  contains object's reference and must be skiped when accessing the native
*  method parameters.
**************************************************************************************
*
* This file is covered by the GNU GPL with the following exception:
*   As a special exception, the copyright holders of this library give you permission
*   to link this library with independent modules to produce an executable, regardless
*   of the license terms of these independent modules, and to copy and distribute the
*   resulting executable under terms of your choice, provided that you also meet, for
*   each linked independent module, the terms and conditions of the license of that
*   module. An independent module is a module which is not derived from or based on
*   this library. If you modify this library, you may extend this exception to your
*   version of the library, but you are not obligated to do so. If you do not wish
*   to do so, delete this exception statement from your version.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY,  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL RTJ COMPUTING BE LIABLE FOR ANY CLAIM, DAMAGES
* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Copyright (c) 2000-2006 RTJ Computing Pty. Ltd. All rights reserved.
**************************************************************************************/
#include <lpc2xxx.h>
#include "startup/config.h"
#include "javavm.h"

extern vm_config_t vmconfig;

/****************************************************************************
* Writes the specified 10-bit value into DACR register.
* On entry: param[1] - 10-bit value for DACR register
*           param[2] - bias when false DAC conversion is 1us/700uA, when true 
*                      conversion is 2.5us/350uA.
*
* Java prototype:
*   public native void set(int val, boolean bias);
*
****************************************************************************/
int16 lpc2xxx_hw_DAC_set(int32 param[], int32 *retval)
{
    uint32 v = param[1] << 6;
    if (param[1])
        v |= 0x10000;
    DACR = v;

    return NO_EXCEP;
}

